Dear author, co-authors, it has taken more time than I hoped for to finally come to my decision on the ms you submitted for publication in ACP. We received the reviews some time ago and overall they were quite positive on the evaluation on the paper and have also read carefully your response to their comments. In addition, I have checked in detail the revised version of the ms and in doing so, I came across a number of issues that I would like you to still consider before coming to the final decision on the ms. I am aware that it would have been more optimal to have these editors comments already provided in an earlier stage so that you could have included this in your revision but decided to still provide them now at this stage. As you will see in the provided editors review, the main issue I raise is about the role of chemistry versus surface deposition and boundary layer dynamics.

Hope you appreciate these (last) round of comments and look forward to your response,

Laurens Ganzeveld

Dear author, co-authors,

Having read your response and the revised version of the ms, in which you have addressed my last round of editors comments, I accept your paper for publication in ACP. I hope that this paper will further feed the discussions, required development and proper application of Chemistry (and climate) models in assessments of air quality also as a function of climate and environmental change,

Congratulations and regards, Laurens Ganzeveld